CARL RUSSO/Staff photo. Gary Costa of West Newbury rides the trail through the woods of the Hampstead Conservation land on Wednesday evening. Hampstead and Plaistow both feature an expansive network of trails used for hikers and bikers. While bikers can often get a bad rap on trails, this group cleans and maintains the trails to improve them for others — even uncovering trails that have long since been forgotten. 7/9/2014.